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详解Linux 虚拟机根分区磁盘扩充空间记录

  • 时间:2020-08-11 06:53 编辑: 来源: 阅读:
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摘要:详解Linux 虚拟机根分区磁盘扩充空间记录
博主:Centos6.5 64 位 VM 11 起因:想让VM11里的Linux虚拟机全屏显示,想支持虚拟机与物理机之间的无缝复制粘贴功能。安装vmware tools 导致空间不足,出现如下 [img]http://img.1sucai.cn/uploads/article/2018010710/20180107100152_0_25237.jpg[/img]   网上查找后发现解决方法:
yum remove gnome-power-manager
yum install gnome-power-manager
执行后出现: [img]http://img.1sucai.cn/uploads/article/2018010710/20180107100153_1_31642.jpg[/img]   提示是空间不足 进行查看: [img]http://img.1sucai.cn/uploads/article/2018010710/20180107100153_2_50599.jpg[/img]   果然,空间利用100% 问题转向: 1.为何使用如此之快? 2.如何扩充? 问题1: 此为根目录,安装的东西都在里面。(此过简略,并没有深入研究) 正题: 由此,花了大概2个小时解决,记录如下: [b]1.磁盘扩充 [/b] [img]http://img.1sucai.cn/uploads/article/2018010710/20180107100154_3_12019.png[/img] 填入你需要磁盘的大小,填入的数值-当下硬盘的大小数值=你所增加的 [b]2.查看, [/b] 命令: fdisk -l (root用户)
[ding@master ~]$ sudo fdisk -l

Disk /dev/sda: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000c82f5

  Device Boot   Start     End   Blocks  Id System
/dev/sda1  *      1     64   512000  83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2       64    1045   7875584  8e Linux LVM

Disk /dev/mapper/vg_master-lv_root: 7205 MB, 7205814272 bytes
255 heads, 63 sectors/track, 876 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000


Disk /dev/mapper/vg_master-lv_swap: 855 MB, 855638016 bytes
255 heads, 63 sectors/track, 104 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
发现已经变成21.5G了 [b]3.操作分区表 [/b] 命令:
fdisk /dev/sda
[img]http://img.1sucai.cn/uploads/article/2018010710/20180107100154_4_30970.png[/img] 键入p 查看分区数量,得到: [img]http://img.1sucai.cn/uploads/article/2018010710/20180107100154_5_96326.png[/img]   由此判断我们增加的分区号应该为3(dev/sda1,dev/sda2……接下来应该是dev/sda3了吧) 键入n,增加一个分区,得到: [img]http://img.1sucai.cn/uploads/article/2018010710/20180107100155_6_47453.jpg[/img]   键入 p,主分区,并键入3(编号): [img]http://img.1sucai.cn/uploads/article/2018010710/20180107100155_7_70775.jpg[/img]   默认起始扇区和结束扇区即可(键入两次Enter) 键入t,修改分区类型为8e: [img]http://img.1sucai.cn/uploads/article/2018010710/20180107100156_8_10276.jpg[/img]   键入w,写分区表,然后重启: [img]http://img.1sucai.cn/uploads/article/2018010710/20180107100156_9_92524.jpg[/img]   [b]4.格式化 [/b] mkfs.etx4 /dev/sda3 .ext4是自己的文件系统类型,如果不知道的话,可以查询:
parted /dev/sda

(parted) print list
1

parted
[b]5.卷扩容,添加进LVM组:[/b] lvm> pvcreate /dev/sda3         初始化刚才的分区 [img]http://img.1sucai.cn/uploads/article/2018010710/20180107100157_10_95978.jpg[/img] lvm> vgextend vg_master /dev/sda3   将初始化过的分区加入到虚拟卷组vg_master lvm>lvextend -L +12G /dev/vg_master/lv_root  扩展已有卷的容量 [img]http://img.1sucai.cn/uploads/article/2018010710/20180107100157_11_26879.jpg[/img] lvm>pvdisplay              查看卷容量 [img]http://img.1sucai.cn/uploads/article/2018010710/20180107100158_12_46384.jpg[/img]   lvm>quit                  [b]6.文件系统扩容[/b]
resize2fs /dev/vg_master/lv_root
[img]http://img.1sucai.cn/uploads/article/2018010710/20180107100158_13_27802.jpg[/img] 以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持编程素材网。
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